Highest listed crest 24.38 ft June 28, 2012; 34,800 cubic feet per second
Flood stage 12.0 ft Major flooding from 19.0 ft
Crests at major 19 3rd of 237 gauges in Florida
Most recent flood crest October 5, 2026 12.65 ft, minor flooding Listed crests at the St. Marys River near Macclenny, 1927 to 2026 10 15 20 25 ft Flood stage 12.0 ft Major 19.0 ft Feb 27, 1927: 12.15 ft, minor flooding; 2,910 cubic feet per second Jul 30, 1927: 10.80 ft, action stage; 2,170 cubic feet per second Aug 17, 1927: 11.58 ft, action stage; 2,520 cubic feet per second Aug 24, 1927: 12.40 ft, minor flooding; 3,070 cubic feet per second Aug 28, 1927: 12.20 ft, minor flooding; 2,910 cubic feet per second Apr 17, 1928: 14.38 ft, minor flooding; 5,210 cubic feet per second Apr 25, 1928: 14.70 ft, minor flooding; 5,590 cubic feet per second Apr 29, 1928: 14.80 ft, minor flooding; 5,720 cubic feet per second Jul 5, 1928: 11.63 ft, action stage; 2,520 cubic feet per second Jul 16, 1928: 13.38 ft, minor flooding; 4,040 cubic feet per second Aug 17, 1928: 11.25 ft, action stage; 2,330 cubic feet per second Sep 20, 1928: 21.90 ft, major flooding; 26,100 cubic feet per second Sep 24, 1928: 17.26 ft, moderate flooding; 9,160 cubic feet per second Jan 14, 1929: 10.80 ft, action stage; 2,160 cubic feet per second Feb 19, 1929: 11.28 ft, action stage; 2,370 cubic feet per second Feb 24, 1929: 10.55 ft, action stage; 2,080 cubic feet per second Mar 18, 1929: 14.18 ft, minor flooding; 4,990 cubic feet per second Apr 17, 1929: 11.10 ft, action stage; 2,280 cubic feet per second May 11, 1929: 11.20 ft, action stage; 2,320 cubic feet per second Jul 22, 1929: 12.90 ft, minor flooding; 3,520 cubic feet per second Aug 17, 1929: 10.80 ft, action stage; 2,160 cubic feet per second Aug 21, 1929: 12.45 ft, minor flooding; 3,070 cubic feet per second Aug 30, 1929: 11.15 ft, action stage; 2,320 cubic feet per second Sep 5, 1929: 12.50 ft, minor flooding; 3,150 cubic feet per second Oct 2, 1929: 18.18 ft, moderate flooding; 11,400 cubic feet per second Jan 24, 1930: 10.91 ft, action stage; 2,200 cubic feet per second Feb 1, 1930: 11.73 ft, action stage; 2,580 cubic feet per second Mar 9, 1930: 13.82 ft, minor flooding; 4,500 cubic feet per second Mar 17, 1930: 13.15 ft, minor flooding; 3,820 cubic feet per second Mar 21, 1930: 12.85 ft, minor flooding; 3,420 cubic feet per second Mar 25, 1930: 17.30 ft, moderate flooding; 9,760 cubic feet per second Mar 30, 1930: 15.05 ft, moderate flooding; 6,070 cubic feet per second Apr 8, 1930: 11.50 ft, action stage; 2,470 cubic feet per second Jun 21, 1930: 13.29 ft, minor flooding; 3,930 cubic feet per second Apr 7, 1931: 10.62 ft, action stage; 2,080 cubic feet per second Jun 16, 1932: 10.70 ft, action stage; 2,120 cubic feet per second Aug 25, 1932: 12.30 ft, minor flooding; 2,990 cubic feet per second Sep 18, 1932: 14.10 ft, minor flooding; 4,860 cubic feet per second Sep 24, 1932: 11.50 ft, action stage; 2,470 cubic feet per second Feb 12, 1933: 13.45 ft, minor flooding; 4,040 cubic feet per second Mar 22, 1933: 13.78 ft, minor flooding; 4,500 cubic feet per second Apr 13, 1933: 12.90 ft, minor flooding; 3,520 cubic feet per second Apr 17, 1933: 14.38 ft, minor flooding; 5,250 cubic feet per second Jul 24, 1933: 10.65 ft, action stage; 2,150 cubic feet per second Sep 7, 1933: 14.35 ft, minor flooding; 5,250 cubic feet per second Jun 18, 1934: 16.39 ft, moderate flooding; 8,260 cubic feet per second Sep 8, 1935: 14.20 ft, minor flooding; 4,990 cubic feet per second Sep 15, 1935: 12.58 ft, minor flooding; 3,240 cubic feet per second Sep 19, 1935: 12.75 ft, minor flooding; 3,420 cubic feet per second Sep 23, 1935: 13.20 ft, minor flooding; 3,820 cubic feet per second Feb 24, 1937: 13.15 ft, minor flooding; 3,820 cubic feet per second Apr 10, 1937: 11.50 ft, action stage; 2,460 cubic feet per second Sep 24, 1937: 14.95 ft, minor flooding; 6,030 cubic feet per second Oct 4, 1937: 16.00 ft, moderate flooding; 7,580 cubic feet per second Jul 31, 1938: 11.30 ft, action stage; 2,350 cubic feet per second Aug 8, 1938: 16.25 ft, moderate flooding; 7,920 cubic feet per second Oct 25, 1938: 15.70 ft, moderate flooding; 7,100 cubic feet per second Jul 11, 1939: 13.10 ft, minor flooding; 3,720 cubic feet per second Aug 7, 1939: 11.26 ft, action stage; 2,350 cubic feet per second Aug 16, 1939: 11.60 ft, action stage; 2,520 cubic feet per second Aug 29, 1939: 10.60 ft, action stage; 2,020 cubic feet per second Feb 20, 1940: 11.11 ft, action stage; 2,250 cubic feet per second Dec 14, 1941: 11.31 ft, action stage; 2,500 cubic feet per second Dec 29, 1941: 13.45 ft, minor flooding; 4,140 cubic feet per second Jan 6, 1942: 15.36 ft, moderate flooding; 6,800 cubic feet per second Feb 20, 1942: 15.14 ft, moderate flooding; 6,430 cubic feet per second Feb 25, 1942: 14.30 ft, minor flooding; 5,240 cubic feet per second Mar 7, 1942: 14.10 ft, minor flooding; 4,960 cubic feet per second Mar 16, 1942: 12.75 ft, minor flooding; 3,580 cubic feet per second Mar 20, 1942: 12.74 ft, minor flooding; 3,500 cubic feet per second Apr 4, 1944: 10.69 ft, action stage; 2,060 cubic feet per second Jul 7, 1944: 10.67 ft, action stage; 2,120 cubic feet per second Jul 15, 1944: 12.53 ft, minor flooding; 3,180 cubic feet per second Jul 25, 1944: 12.00 ft, minor flooding; 2,790 cubic feet per second Aug 11, 1944: 11.63 ft, action stage; 2,540 cubic feet per second Aug 28, 1944: 14.85 ft, minor flooding; 5,770 cubic feet per second Sep 4, 1944: 10.78 ft, action stage; 2,110 cubic feet per second Oct 21, 1944: 19.67 ft, major flooding; 16,100 cubic feet per second Jan 10, 1945: 12.53 ft, minor flooding; 3,180 cubic feet per second Jul 15, 1945: 11.77 ft, action stage; 2,660 cubic feet per second Jul 24, 1945: 15.18 ft, moderate flooding; 6,420 cubic feet per second Aug 11, 1945: 11.14 ft, action stage; 2,250 cubic feet per second Aug 17, 1945: 13.93 ft, minor flooding; 4,540 cubic feet per second Aug 22, 1945: 15.97 ft, moderate flooding; 7,750 cubic feet per second Sep 19, 1945: 12.09 ft, minor flooding; 2,860 cubic feet per second Dec 31, 1945: 11.93 ft, action stage; 2,720 cubic feet per second Jan 25, 1946: 11.05 ft, action stage; 2,200 cubic feet per second Jul 2, 1946: 12.96 ft, minor flooding; 3,830 cubic feet per second Aug 2, 1946: 15.13 ft, moderate flooding; 6,260 cubic feet per second Aug 30, 1946: 11.13 ft, action stage; 2,250 cubic feet per second Sep 22, 1946: 12.37 ft, minor flooding; 3,090 cubic feet per second Sep 26, 1946: 11.65 ft, action stage; 2,540 cubic feet per second Oct 10, 1946: 12.90 ft, minor flooding; 3,520 cubic feet per second Mar 21, 1947: 11.53 ft, action stage; 2,480 cubic feet per second Apr 5, 1947: 11.83 ft, action stage; 2,660 cubic feet per second Apr 17, 1947: 11.36 ft, action stage; 2,420 cubic feet per second Sep 25, 1947: 22.29 ft, major flooding; 28,100 cubic feet per second Oct 8, 1947: 12.88 ft, minor flooding; 3,520 cubic feet per second Oct 18, 1947: 17.58 ft, moderate flooding; 10,300 cubic feet per second Oct 26, 1947: 19.72 ft, major flooding; 16,100 cubic feet per second Nov 13, 1947: 17.67 ft, moderate flooding; 10,500 cubic feet per second Nov 20, 1947: 14.29 ft, minor flooding; 5,020 cubic feet per second Dec 17, 1947: 12.86 ft, minor flooding; 3,520 cubic feet per second Dec 23, 1947: 15.13 ft, moderate flooding; 6,060 cubic feet per second Jan 26, 1948: 11.14 ft, action stage; 2,200 cubic feet per second Feb 1, 1948: 12.80 ft, minor flooding; 3,430 cubic feet per second Mar 11, 1948: 18.96 ft, moderate flooding; 13,700 cubic feet per second Apr 3, 1948: 21.97 ft, major flooding; 26,600 cubic feet per second Aug 9, 1948: 14.88 ft, minor flooding; 5,790 cubic feet per second Aug 13, 1948: 12.77 ft, minor flooding; 3,430 cubic feet per second Aug 22, 1948: 12.20 ft, minor flooding; 2,930 cubic feet per second Oct 3, 1948: 15.06 ft, moderate flooding; 5,740 cubic feet per second Feb 8, 1949: 16.58 ft, moderate flooding; 8,230 cubic feet per second Sep 2, 1949: 14.39 ft, minor flooding; 4,850 cubic feet per second Jul 18, 1950: 11.14 ft, action stage; 2,190 cubic feet per second Sep 7, 1950: 21.96 ft, major flooding; 26,600 cubic feet per second Oct 22, 1950: 21.23 ft, major flooding; 22,600 cubic feet per second Aug 23, 1953: 11.65 ft, action stage; 2,470 cubic feet per second Aug 29, 1953: 15.00 ft, moderate flooding; 5,600 cubic feet per second Sep 8, 1953: 11.88 ft, action stage; 2,610 cubic feet per second Sep 28, 1953: 16.20 ft, moderate flooding; 7,490 cubic feet per second Oct 2, 1953: 18.27 ft, moderate flooding; 11,900 cubic feet per second Oct 11, 1953: 13.90 ft, minor flooding; 4,290 cubic feet per second Dec 15, 1953: 11.32 ft, action stage; 2,360 cubic feet per second Dec 27, 1953: 14.66 ft, minor flooding; 5,160 cubic feet per second Jan 1, 1954: 13.83 ft, minor flooding; 4,210 cubic feet per second May 8, 1956: 10.73 ft, action stage; 2,010 cubic feet per second Oct 18, 1956: 11.82 ft, action stage; 2,570 cubic feet per second Oct 24, 1956: 10.94 ft, action stage; 2,110 cubic feet per second Jun 12, 1957: 16.70 ft, moderate flooding; 8,420 cubic feet per second Aug 20, 1957: 10.72 ft, action stage; 2,010 cubic feet per second Oct 4, 1957: 13.07 ft, minor flooding; 3,560 cubic feet per second Apr 12, 1958: 16.36 ft, moderate flooding; 8,020 cubic feet per second Jul 6, 1958: 11.06 ft, action stage; 1,980 cubic feet per second Mar 3, 1959: 13.46 ft, minor flooding; 3,970 cubic feet per second Mar 8, 1959: 14.61 ft, minor flooding; 5,340 cubic feet per second Mar 18, 1959: 17.42 ft, moderate flooding; 10,000 cubic feet per second Apr 4, 1959: 10.53 ft, action stage; 1,720 cubic feet per second May 23, 1959: 16.34 ft, moderate flooding; 6,970 cubic feet per second Jun 8, 1959: 11.60 ft, action stage; 2,070 cubic feet per second Jul 19, 1959: 12.31 ft, minor flooding; 2,530 cubic feet per second Sep 17, 1959: 13.68 ft, minor flooding; 3,650 cubic feet per second Oct 17, 1959: 11.00 ft, action stage; 1,790 cubic feet per second Feb 7, 1960: 11.30 ft, action stage; 1,920 cubic feet per second Feb 27, 1960: 13.91 ft, minor flooding; 3,880 cubic feet per second Mar 5, 1960: 12.01 ft, minor flooding; 2,320 cubic feet per second Mar 19, 1960: 16.80 ft, moderate flooding; 7,770 cubic feet per second Jul 13, 1960: 10.59 ft, action stage; 1,640 cubic feet per second Jul 18, 1960: 10.91 ft, action stage; 1,750 cubic feet per second Jul 30, 1960: 12.21 ft, minor flooding; 2,460 cubic feet per second Sep 13, 1960: 10.76 ft, action stage; 1,700 cubic feet per second Sep 28, 1960: 13.18 ft, minor flooding; 3,670 cubic feet per second Oct 10, 1960: 12.62 ft, minor flooding; 3,100 cubic feet per second Jul 22, 1961: 11.51 ft, action stage; 2,250 cubic feet per second Aug 21, 1961: 12.97 ft, minor flooding; 3,460 cubic feet per second Aug 28, 1961: 14.92 ft, minor flooding; 5,770 cubic feet per second Apr 5, 1962: 11.76 ft, action stage; 2,460 cubic feet per second Aug 5, 1962: 10.93 ft, action stage; 2,050 cubic feet per second Jan 15, 1963: 11.18 ft, action stage; 2,150 cubic feet per second Feb 6, 1963: 12.52 ft, minor flooding; 3,040 cubic feet per second Feb 27, 1963: 11.08 ft, action stage; 2,110 cubic feet per second Mar 3, 1963: 11.03 ft, action stage; 2,090 cubic feet per second Sep 30, 1963: 16.39 ft, moderate flooding; 8,070 cubic feet per second Jan 14, 1964: 14.39 ft, minor flooding; 4,470 cubic feet per second Jan 19, 1964: 14.33 ft, minor flooding; 4,400 cubic feet per second Feb 10, 1964: 11.77 ft, action stage; 2,340 cubic feet per second Feb 20, 1964: 10.99 ft, action stage; 1,940 cubic feet per second Mar 1, 1964: 16.71 ft, moderate flooding; 7,430 cubic feet per second May 4, 1964: 20.64 ft, major flooding; 16,200 cubic feet per second Jul 29, 1964: 13.54 ft, minor flooding; 3,570 cubic feet per second Aug 2, 1964: 13.88 ft, minor flooding; 3,910 cubic feet per second Aug 15, 1964: 10.95 ft, action stage; 1,920 cubic feet per second Aug 24, 1964: 12.60 ft, minor flooding; 2,820 cubic feet per second Aug 30, 1964: 14.33 ft, minor flooding; 4,400 cubic feet per second Sep 13, 1964: 23.25 ft, major flooding; 26,000 cubic feet per second Dec 7, 1964: 13.06 ft, minor flooding; 3,150 cubic feet per second Dec 28, 1964: 16.68 ft, moderate flooding; 7,380 cubic feet per second Feb 17, 1965: 11.80 ft, action stage; 2,350 cubic feet per second Mar 6, 1965: 13.33 ft, minor flooding; 3,370 cubic feet per second Mar 22, 1965: 11.69 ft, action stage; 2,300 cubic feet per second Jun 28, 1965: 11.67 ft, action stage; 2,280 cubic feet per second Jul 22, 1965: 11.99 ft, action stage; 2,440 cubic feet per second Aug 10, 1965: 11.60 ft, action stage; 2,250 cubic feet per second Aug 17, 1965: 14.22 ft, minor flooding; 4,210 cubic feet per second Oct 2, 1965: 12.65 ft, minor flooding; 2,760 cubic feet per second Dec 22, 1965: 12.22 ft, minor flooding; 2,480 cubic feet per second Jan 28, 1966: 15.12 ft, moderate flooding; 5,120 cubic feet per second Feb 21, 1966: 14.33 ft, minor flooding; 4,200 cubic feet per second Mar 2, 1966: 15.19 ft, moderate flooding; 5,210 cubic feet per second Mar 7, 1966: 14.65 ft, minor flooding; 4,560 cubic feet per second Mar 16, 1966: 14.66 ft, minor flooding; 4,570 cubic feet per second May 11, 1966: 10.73 ft, action stage; 1,780 cubic feet per second May 19, 1966: 11.20 ft, action stage; 1,970 cubic feet per second Jun 12, 1966: 11.88 ft, action stage; 2,290 cubic feet per second Jun 21, 1966: 11.50 ft, action stage; 2,100 cubic feet per second Jul 5, 1966: 13.55 ft, minor flooding; 3,460 cubic feet per second Aug 12, 1966: 14.04 ft, minor flooding; 3,910 cubic feet per second Aug 27, 1966: 11.90 ft, action stage; 2,300 cubic feet per second Oct 4, 1966: 12.82 ft, minor flooding; 2,860 cubic feet per second Oct 12, 1966: 14.31 ft, minor flooding; 4,300 cubic feet per second Jan 6, 1967: 10.75 ft, action stage; 1,670 cubic feet per second Feb 15, 1967: 14.75 ft, minor flooding; 5,050 cubic feet per second Aug 15, 1967: 11.43 ft, action stage; 2,210 cubic feet per second Sep 1, 1967: 11.93 ft, action stage; 2,450 cubic feet per second Jun 8, 1968: 10.72 ft, action stage; 1,790 cubic feet per second Aug 31, 1968: 13.83 ft, minor flooding; 3,710 cubic feet per second Mar 21, 1969: 11.60 ft, action stage; 2,350 cubic feet per second Sep 25, 1969: 12.25 ft, minor flooding; 2,760 cubic feet per second Oct 5, 1969: 12.87 ft, minor flooding; 3,060 cubic feet per second Nov 2, 1969: 15.37 ft, moderate flooding; 5,700 cubic feet per second Dec 12, 1969: 14.14 ft, minor flooding; 4,210 cubic feet per second Jan 8, 1970: 13.13 ft, minor flooding; 3,260 cubic feet per second Jan 17, 1970: 11.21 ft, action stage; 2,060 cubic feet per second Feb 4, 1970: 16.16 ft, moderate flooding; 6,860 cubic feet per second Feb 20, 1970: 12.19 ft, minor flooding; 2,580 cubic feet per second Mar 31, 1970: 19.88 ft, major flooding; 14,500 cubic feet per second Aug 15, 1970: 14.77 ft, minor flooding; 4,930 cubic feet per second Aug 22, 1970: 15.24 ft, moderate flooding; 5,530 cubic feet per second Aug 28, 1970: 14.61 ft, minor flooding; 4,740 cubic feet per second Aug 20, 1971: 15.96 ft, moderate flooding; 6,240 cubic feet per second Aug 28, 1971: 13.59 ft, minor flooding; 3,490 cubic feet per second Dec 23, 1971: 10.85 ft, action stage; 1,830 cubic feet per second Jan 16, 1972: 13.35 ft, minor flooding; 3,280 cubic feet per second Jan 25, 1972: 12.07 ft, minor flooding; 2,400 cubic feet per second Feb 5, 1972: 11.37 ft, action stage; 2,040 cubic feet per second Feb 9, 1972: 11.52 ft, action stage; 2,110 cubic feet per second Feb 19, 1972: 10.66 ft, action stage; 1,750 cubic feet per second Apr 2, 1972: 12.99 ft, minor flooding; 2,990 cubic feet per second Jun 22, 1972: 13.21 ft, minor flooding; 3,170 cubic feet per second Jun 29, 1972: 14.01 ft, minor flooding; 3,880 cubic feet per second Aug 31, 1972: 10.76 ft, action stage; 1,800 cubic feet per second Jan 31, 1973: 11.93 ft, action stage; 2,320 cubic feet per second Feb 4, 1973: 11.39 ft, action stage; 2,050 cubic feet per second Feb 12, 1973: 12.38 ft, minor flooding; 2,580 cubic feet per second Feb 17, 1973: 12.81 ft, minor flooding; 2,870 cubic feet per second Mar 12, 1973: 12.23 ft, minor flooding; 2,490 cubic feet per second Apr 5, 1973: 22.86 ft, major flooding; 28,000 cubic feet per second Jun 2, 1973: 12.24 ft, minor flooding; 2,490 cubic feet per second Jun 9, 1973: 10.67 ft, action stage; 1,920 cubic feet per second Jun 27, 1973: 11.63 ft, action stage; 2,370 cubic feet per second Aug 7, 1974: 11.49 ft, action stage; 2,160 cubic feet per second Aug 22, 1974: 15.28 ft, moderate flooding; 5,290 cubic feet per second Sep 7, 1974: 15.50 ft, moderate flooding; 5,550 cubic feet per second Apr 17, 1975: 14.50 ft, minor flooding; 4,500 cubic feet per second May 19, 1975: 10.70 ft, action stage; 1,800 cubic feet per second Jul 19, 1975: 11.12 ft, action stage; 2,000 cubic feet per second Aug 1, 1975: 13.75 ft, minor flooding; 3,750 cubic feet per second Aug 14, 1975: 10.70 ft, action stage; 1,840 cubic feet per second Sep 11, 1975: 11.04 ft, action stage; 1,970 cubic feet per second Sep 15, 1975: 12.94 ft, minor flooding; 3,060 cubic feet per second May 27, 1976: 11.18 ft, action stage; 2,080 cubic feet per second Jan 6, 1977: 11.87 ft, action stage; 2,360 cubic feet per second Feb 6, 1977: 12.35 ft, minor flooding; 2,630 cubic feet per second Aug 27, 1977: 12.15 ft, minor flooding; 2,530 cubic feet per second Sep 7, 1977: 13.20 ft, minor flooding; 3,240 cubic feet per second Sep 24, 1977: 13.33 ft, minor flooding; 3,350 cubic feet per second Dec 4, 1977: 12.06 ft, minor flooding; 2,480 cubic feet per second Dec 8, 1977: 12.74 ft, minor flooding; 2,870 cubic feet per second Jan 22, 1978: 13.26 ft, minor flooding; 3,290 cubic feet per second Feb 20, 1978: 11.72 ft, action stage; 2,300 cubic feet per second Mar 5, 1978: 12.44 ft, minor flooding; 2,700 cubic feet per second Mar 11, 1978: 12.42 ft, minor flooding; 2,690 cubic feet per second Mar 17, 1978: 12.41 ft, minor flooding; 2,680 cubic feet per second May 6, 1978: 14.59 ft, minor flooding; 4,590 cubic feet per second May 13, 1979: 14.11 ft, minor flooding; 4,080 cubic feet per second Aug 7, 1979: 11.21 ft, action stage; 2,050 cubic feet per second Sep 6, 1979: 10.73 ft, action stage; 1,860 cubic feet per second Sep 18, 1979: 14.19 ft, minor flooding; 4,150 cubic feet per second Sep 29, 1979: 14.58 ft, minor flooding; 4,580 cubic feet per second Mar 12, 1980: 16.35 ft, moderate flooding; 6,950 cubic feet per second Apr 1, 1980: 12.22 ft, minor flooding; 2,570 cubic feet per second Apr 5, 1980: 12.91 ft, minor flooding; 3,000 cubic feet per second Feb 21, 1981: 11.18 ft, action stage; 2,080 cubic feet per second Mar 7, 1981: 10.82 ft, action stage; 1,930 cubic feet per second Apr 3, 1981: 11.32 ft, action stage; 2,120 cubic feet per second Apr 13, 1982: 12.64 ft, minor flooding; 3,220 cubic feet per second Apr 18, 1982: 11.42 ft, action stage; 2,400 cubic feet per second Aug 11, 1982: 10.52 ft, action stage; 1,840 cubic feet per second Feb 16, 1983: 13.33 ft, minor flooding; 3,320 cubic feet per second Mar 9, 1983: 10.52 ft, action stage; 1,790 cubic feet per second Mar 20, 1983: 14.61 ft, minor flooding; 4,610 cubic feet per second Apr 11, 1983: 14.36 ft, minor flooding; 4,330 cubic feet per second Jul 3, 1983: 13.69 ft, minor flooding; 3,680 cubic feet per second Dec 31, 1983: 15.56 ft, moderate flooding; 5,780 cubic feet per second Feb 29, 1984: 13.23 ft, minor flooding; 3,270 cubic feet per second Mar 8, 1984: 13.12 ft, minor flooding; 3,170 cubic feet per second Mar 30, 1984: 16.62 ft, moderate flooding; 7,380 cubic feet per second Apr 5, 1984: 17.11 ft, moderate flooding; 8,220 cubic feet per second Apr 10, 1984: 14.41 ft, minor flooding; 4,380 cubic feet per second Aug 3, 1984: 11.83 ft, action stage; 2,360 cubic feet per second Sep 30, 1984: 13.24 ft, minor flooding; 3,270 cubic feet per second Aug 12, 1985: 10.95 ft, action stage; 1,940 cubic feet per second Sep 3, 1985: 14.92 ft, minor flooding; 4,950 cubic feet per second Dec 31, 1985: 15.66 ft, moderate flooding; 5,920 cubic feet per second Jan 7, 1986: 11.63 ft, action stage; 2,340 cubic feet per second Jan 13, 1986: 14.70 ft, minor flooding; 5,400 cubic feet per second Feb 12, 1986: 15.18 ft, moderate flooding; 5,770 cubic feet per second Mar 17, 1986: 12.71 ft, minor flooding; 3,130 cubic feet per second Jan 25, 1987: 13.12 ft, minor flooding; 3,430 cubic feet per second Feb 9, 1987: 13.33 ft, minor flooding; 3,620 cubic feet per second Feb 24, 1987: 13.54 ft, minor flooding; 3,830 cubic feet per second Mar 3, 1987: 12.40 ft, minor flooding; 2,840 cubic feet per second Mar 9, 1987: 12.23 ft, minor flooding; 2,730 cubic feet per second Mar 31, 1987: 15.51 ft, moderate flooding; 6,250 cubic feet per second Aug 18, 1987: 13.08 ft, minor flooding; 3,380 cubic feet per second Feb 22, 1988: 16.53 ft, moderate flooding; 7,460 cubic feet per second Mar 7, 1988: 12.05 ft, minor flooding; 2,670 cubic feet per second Mar 11, 1988: 11.45 ft, action stage; 2,320 cubic feet per second Sep 4, 1988: 11.69 ft, action stage; 2,450 cubic feet per second Sep 9, 1988: 17.43 ft, moderate flooding; 9,260 cubic feet per second Sep 30, 1989: 11.20 ft, action stage; 1,890 cubic feet per second Feb 1, 1991: 11.54 ft, action stage; 2,290 cubic feet per second Mar 5, 1991: 14.30 ft, minor flooding; 4,890 cubic feet per second Mar 20, 1991: 12.37 ft, minor flooding; 2,870 cubic feet per second Apr 25, 1991: 13.50 ft, minor flooding; 3,910 cubic feet per second Jun 7, 1991: 14.03 ft, minor flooding; 4,520 cubic feet per second Jul 1, 1991: 10.89 ft, action stage; 2,000 cubic feet per second Jul 14, 1991: 11.83 ft, action stage; 2,460 cubic feet per second Jul 20, 1991: 10.56 ft, action stage; 1,860 cubic feet per second Jul 26, 1991: 10.52 ft, action stage; 1,700 cubic feet per second Jul 31, 1991: 10.63 ft, action stage; 1,850 cubic feet per second Aug 7, 1991: 13.00 ft, minor flooding; 3,370 cubic feet per second Oct 4, 1991: 11.69 ft, action stage; 2,360 cubic feet per second Aug 10, 1992: 11.67 ft, action stage; 2,430 cubic feet per second Aug 23, 1992: 12.10 ft, minor flooding; 2,710 cubic feet per second Oct 4, 1992: 19.81 ft, major flooding; 15,000 cubic feet per second Nov 8, 1993: 10.66 ft, action stage; 1,910 cubic feet per second Nov 12, 1993: 10.78 ft, action stage; 1,960 cubic feet per second Feb 1, 1994: 14.50 ft, minor flooding; 4,770 cubic feet per second Oct 5, 1994: 13.78 ft, minor flooding; 3,770 cubic feet per second Oct 13, 1994: 16.71 ft, moderate flooding; 7,950 cubic feet per second Sep 17, 1995: 12.04 ft, minor flooding; 2,630 cubic feet per second Oct 8, 1996: 19.62 ft, major flooding; 14,400 cubic feet per second Apr 30, 1997: 13.91 ft, minor flooding; 4,120 cubic feet per second Aug 4, 1997: 13.62 ft, minor flooding; 3,870 cubic feet per second Dec 17, 1997: 13.56 ft, minor flooding; 3,740 cubic feet per second Jan 25, 1998: 14.17 ft, minor flooding; 4,400 cubic feet per second Jan 29, 1998: 14.59 ft, minor flooding; 4,740 cubic feet per second Feb 5, 1998: 13.23 ft, minor flooding; 3,540 cubic feet per second Feb 19, 1998: 19.69 ft, major flooding; 14,700 cubic feet per second Feb 24, 1998: 18.85 ft, moderate flooding; 12,300 cubic feet per second Mar 11, 1998: 12.75 ft, minor flooding; 3,170 cubic feet per second Mar 21, 1998: 13.03 ft, minor flooding; 3,380 cubic feet per second Oct 4, 1998: 17.18 ft, moderate flooding; 8,790 cubic feet per second Mar 5, 2002: 11.77 ft, action stage; 2,490 cubic feet per second Jan 3, 2003: 10.57 ft, action stage; 1,990 cubic feet per second Mar 3, 2003: 17.67 ft, moderate flooding; 9,720 cubic feet per second Mar 10, 2003: 18.33 ft, moderate flooding; 11,100 cubic feet per second Jun 21, 2003: 11.26 ft, action stage; 2,050 cubic feet per second Aug 25, 2003: 12.60 ft, minor flooding; 2,680 cubic feet per second Sep 8, 2004: 21.06 ft, major flooding; 19,600 cubic feet per second Sep 29, 2004: 18.20 ft, moderate flooding; 10,826 cubic feet per second Mar 2, 2005: 11.74 ft, action stage; 2,340 cubic feet per second Mar 29, 2005: 13.03 ft, minor flooding; 3,050 cubic feet per second Apr 3, 2005: 15.21 ft, moderate flooding; 5,300 cubic feet per second Apr 9, 2005: 13.92 ft, minor flooding; 3,770 cubic feet per second Jul 4, 2005: 13.73 ft, minor flooding; 3,600 cubic feet per second Jul 17, 2005: 12.50 ft, minor flooding; 2,610 cubic feet per second Aug 4, 2005: 11.32 ft, action stage; 2,010 cubic feet per second Aug 9, 2005: 13.34 ft, minor flooding; 3,260 cubic feet per second Oct 9, 2005: 10.65 ft, action stage; 1,650 cubic feet per second Dec 20, 2005: 13.84 ft, minor flooding; 3,910 cubic feet per second Jan 5, 2006: 12.00 ft, minor flooding; 2,490 cubic feet per second Feb 6, 2006: 12.25 ft, minor flooding; 2,650 cubic feet per second Aug 5, 2007: 13.62 ft, minor flooding; 3,860 cubic feet per second Feb 25, 2008: 10.51 ft, action stage; 1,660 cubic feet per second Mar 10, 2008: 12.69 ft, minor flooding; 2,730 cubic feet per second Aug 24, 2008: 21.14 ft, major flooding; 20,500 cubic feet per second Aug 30, 2008: 16.62 ft, moderate flooding; 7,930 cubic feet per second Apr 5, 2009: 14.58 ft, minor flooding; 4,720 cubic feet per second May 23, 2009: 13.68 ft, minor flooding; 3,670 cubic feet per second May 27, 2009: 15.59 ft, moderate flooding; 6,150 cubic feet per second Jun 9, 2009: 12.12 ft, minor flooding; 2,370 cubic feet per second Jan 23, 2010: 11.01 ft, action stage; 1,760 cubic feet per second Feb 15, 2010: 11.81 ft, action stage; 2,160 cubic feet per second Feb 12, 2011: 10.13 ft, action stage; 1,400 cubic feet per second Jun 28, 2012: 24.38 ft, major flooding; 34,800 cubic feet per second Aug 10, 2012: 11.22 ft, action stage; 1,850 cubic feet per second Aug 23, 2012: 11.98 ft, action stage; 2,280 cubic feet per second Oct 9, 2012: 10.54 ft, action stage; 1,560 cubic feet per second Feb 27, 2013: 10.56 ft, action stage; 1,570 cubic feet per second Mar 26, 2013: 10.54 ft, action stage; 1,560 cubic feet per second May 6, 2013: 12.14 ft, minor flooding; 2,390 cubic feet per second Jul 7, 2013: 13.15 ft, minor flooding; 3,140 cubic feet per second Jul 24, 2013: 10.82 ft, action stage; 1,670 cubic feet per second Aug 25, 2013: 12.32 ft, minor flooding; 2,520 cubic feet per second Sep 1, 2013: 10.64 ft, action stage; 1,600 cubic feet per second Jan 16, 2014: 10.87 ft, action stage; 1,680 cubic feet per second Mar 9, 2014: 11.06 ft, action stage; 1,770 cubic feet per second Mar 19, 2014: 14.60 ft, minor flooding; 4,250 cubic feet per second Mar 31, 2014: 11.95 ft, action stage; 2,090 cubic feet per second Apr 10, 2014: 15.35 ft, moderate flooding; 5,030 cubic feet per second Apr 21, 2014: 15.15 ft, moderate flooding; 5,540 cubic feet per second May 18, 2014: 11.40 ft, action stage; 1,940 cubic feet per second Jun 8, 2014: 12.21 ft, minor flooding; 2,410 cubic feet per second Sep 11, 2014: 16.36 ft, moderate flooding; 7,000 cubic feet per second Oct 2, 2014: 12.65 ft, minor flooding; 2,520 cubic feet per second Dec 26, 2014: 11.80 ft, action stage; 2,030 cubic feet per second Sep 9, 2015: 11.38 ft, action stage; 1,850 cubic feet per second Sep 5, 2016: 13.79 ft, minor flooding; 3,480 cubic feet per second Aug 4, 2017: 13.63 ft, minor flooding; 3,320 cubic feet per second Aug 9, 2017: 12.88 ft, minor flooding; 2,690 cubic feet per second Sep 3, 2017: 12.04 ft, minor flooding; 2,160 cubic feet per second Sep 12, 2017: 22.32 ft, major flooding; 22,300 cubic feet per second Jun 2, 2018: 12.07 ft, minor flooding; 2,030 cubic feet per second Jul 3, 2018: 12.93 ft, minor flooding; 2,540 cubic feet per second Aug 5, 2018: 12.41 ft, minor flooding; 2,360 cubic feet per second Dec 17, 2018: 13.05 ft, minor flooding; 2,480 cubic feet per second Jan 30, 2019: 12.10 ft, minor flooding; 1,930 cubic feet per second Jun 14, 2020: 15.51 ft, moderate flooding; 5,600 cubic feet per second Aug 14, 2020: 14.47 ft, minor flooding; 4,230 cubic feet per second Feb 20, 2021: 13.49 ft, minor flooding; 3,180 cubic feet per second Jul 10, 2021: 17.33 ft, moderate flooding; 8,780 cubic feet per second Jul 29, 2021: 12.54 ft, minor flooding; 2,450 cubic feet per second Aug 7, 2021: 17.54 ft, moderate flooding; 9,210 cubic feet per second Sep 24, 2021: 13.33 ft, minor flooding; 3,030 cubic feet per second Nov 8, 2021: 13.08 ft, minor flooding; 2,840 cubic feet per second Mar 14, 2022: 14.52 ft, minor flooding; 4,290 cubic feet per second Mar 26, 2022: 13.31 ft, minor flooding; 3,030 cubic feet per second Aug 30, 2022: 12.85 ft, minor flooding; 2,700 cubic feet per second Sep 6, 2022: 13.33 ft, minor flooding; 3,040 cubic feet per second Sep 12, 2022: 12.86 ft, minor flooding; 2,710 cubic feet per second Aug 3, 2023: 12.65 ft, minor flooding; 2,530 cubic feet per second Dec 18, 2023: 17.09 ft, moderate flooding; 8,290 cubic feet per second Jan 12, 2024: 13.15 ft, minor flooding; 2,900 cubic feet per second Jan 18, 2024: 12.25 ft, minor flooding; 2,260 cubic feet per second Aug 7, 2024: 19.71 ft, major flooding; 14,800 cubic feet per second Mar 13, 2025: 13.70 ft, minor flooding; 3,390 cubic feet per second Oct 5, 2026: 12.65 ft, minor flooding; 2,520 cubic feet per second Highest, 24.38 ft, Jun 28, 2012 1940 1960 1980 2000 2020 Crests at or above flood stage, by decade Crests at or above flood stage per decade, St. Marys River near Macclenny 1920s: 14 1930s: 24 1940s: 37 1950s: 17 1960s: 40 40 1970s: 38 1980s: 30 1990s: 23 2000s: 22 2010s: 20 2020s: 20 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable. June 28, 2012: 24.38 ft here, major flooding September 13, 1964: 23.25 ft here, major flooding Moniac FL · Sep 13, 1964 · 18.41 ft · Major April 5, 1973: 22.86 ft here, major flooding Moniac FL · Apr 5, 1973 · 22.98 ft · Major · its highest 07 Other gauges in Baker County Baker County: every hazard · River floods across the country · Florida
NOAA National Water Prediction Service, gauge MACF1, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.